How Can a Pigeon Be a War Hero? And Other Very Important Questions and Answers About the First World War

Why did the First World War start? Who was fighting who? Did soldiers still fight with swords? Had aeroplanes been invented yet? What was it like to be inside the first tank sent to war? How could a shaving brush help you escape being captured? Did animals fight in the war? How can a pigeon be a war hero? What was the Women's Land Army? Why did it go on so long? How did it end?